25436525928791 has 2 divisors, whose sum is σ = 25436525928792. Its totient is φ = 25436525928790.

The previous prime is 25436525928763. The next prime is 25436525928797. The reversal of 25436525928791 is 19782952563452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25436525928791 - 2¹⁸ = 25436525666647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25436525928797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12718262964395 + 12718262964396.

It is an arithmetic number, because the mean of its divisors is an integer number (12718262964396).

Almost surely, 2^{25436525928791} is an apocalyptic number.

25436525928791 is a deficient number, since it is larger than the sum of its proper divisors (1).

25436525928791 is an equidigital number, since it uses as much as digits as its factorization.

25436525928791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592000, while the sum is 68.

The spelling of 25436525928791 in words is "twenty-five trillion, four hundred thirty-six billion, five hundred twenty-five million, nine hundred twenty-eight thousand, seven hundred ninety-one".